/**
 * Copyright (c) <2010>, <SUNNY GUPTA>
 * All rights reserved.

 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *   * Neither the name of the <ORGANIZATION> nor the
 *     names of its contributors may be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <SUNNY GUPTA> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.gwtp.investmentadvisor.server.core.utilities;

import com.google.appengine.api.utils.SystemProperty;
import com.google.apphosting.api.ApiProxy;

/**
 * 
 * @author Sunny Gupta
 *
 */
public class AppengineUtils {

  private static final boolean isDevelopment;
  private static final boolean isProduction;
  private static final String version;
  private static final String appengineRuntimeVersion;
  
  static {
    isDevelopment = SystemProperty.environment.value().equals(SystemProperty.Environment.Value.Development);
    isProduction = SystemProperty.environment.value().equals(SystemProperty.Environment.Value.Production);
    version = ApiProxy.getCurrentEnvironment().getVersionId();
    appengineRuntimeVersion = SystemProperty.version.get();
  }
  
  public static boolean isDevelopment() {
    return isDevelopment;
  }

  public static boolean isProduction() {
    return isProduction;
  }

  /**
   * This is the version as it is in appengine-web.xml.
   * @see http://groups.google.com/group/google-appengine-java/browse_thread/thread/e6bfcbfafd4f6e1e/682873adee802784?lnk=gst&q=version#682873adee802784
   */
  public static String getVersion() {
    return version; 
  }

  /**
   * This is the appengine version (like 1.3.1).
   */
  public static String getAppengineRuntimeVersion() {
    return appengineRuntimeVersion;
  }
  
}